Computing scale



y 1930. N. A. HALLWOOD 1,758,037

COMPUTING SCALE Filed Nov. 20, 1926 2 Sheets-Sheet l L; WW

flf A Halli/00d May 13, 1930.

N. A. HALLWOOD 1,758,037

COMPUTING SCALE Filed Nov. 20) 1926 2 Sheets-Sheet 2 4 4 Halal 00dPatented May 13, 1930 PATENT OFFICE NATHAN A. HALLWOOD, F COLUMBUS, OHIOCOMPUTING SCALE Application filed November 20, 1926. Serial NU; 149,768.

This invention relates to improvements in computing scales, and isdirected especially to scales of the type wherein the movement of thebeam structure from a neutral position under the action of appliedweights is resistant by the operation of a pendulum means. Anotherobject of the invention resides in the provision of a scale of thecharacter specified wherein the scale casing or housing is formed-to bepositioned within an opening provided in a shelf, counter or other baseupon or with which the scale is mounted, to the end of enabling theweight receiver to be positioned more closely adjacent to the top of thecounter so that the scale as a whole will require but a minimum of spaceon the counter and will be largely out of the way and concealed.

Otherobjects of the invention reside in a 2 scale adapted to be inset ina counter or other support and wherein the scale mechanism is suspendedfrom the scale housing which is secured directly to the support,provision being made for leveling the scale mechanism from the to of thehousing; in the provision of level in lcating means, such as spiritlevels on the load receiver of the scale, whereby the true balance ofthe scale mechanism in operating planes may be determined from the topof the housing, and in various other features and improvementshereinafter particularly set forth.

For a further understanding of the invention reference is to be had tothe following description and the accompanying drawings, wherein:

Figure 1 is a vertical longitudinal sectional means,

Figure 5 is a detail end elevation of the computing drum and the lenssupporting means.

Referring more particularly to the drawings the numeral 1 designates thebase upon which the scale mechanism is mounted. This base is adjustablysuspended from the scale housing 2, which is mounted upon a shelf,counter or other support 3. The counter is provided with an opening 4 inwhich the 1 scale properis mounted, and in this instance the housing isformed to include an outwardly directed marginal flange 5, which restsupon the upper surface of the counter and retains the housing in itsapplied position. It will be observed that by means of this constructionthe greater portion of the body of the scale will lie below the plane ofthe top of the counter so that the scale will not interfere to anymaterial extent with operations performed on the'counter, avoiding thebulky appearance and condition presented by the ordinary counter carriedscale. The base 1 is adjustably suspended from the housing by means ofdepending rods 6, the upper ends of the latter being rigidly connectedwith the housing, while their lower ends are pivotally connected as at 7with the ends of the base 1. Also use is made of additional rods 8,which have their lower ends pivotally connected as at 9 with the base 1and have their upper ends reduced and threaded as at 10. These ends passthrough openings provided in the housing and are equipped with nuts ortheir equivalents 11, whereby through the use of this construction, theadjustment of the nuts will permitthe plane of the base A to be variedwith respect to the plane of the housing in order that the scalemechanism per se may be adjusted to secure proper opcrating positionsirrespective of variations in the level of the housing. Thisconstruction is particularly advantageous when pendulum types ofweighing scales are carried 7 b the base and where the latter should beplaced in a true horizontal plane. Moreover, the construction permits ofthe adjustment of the base from the to of the housing whereby theoperation 0 leveling may be carried out with convenience and facility.

The scale mechanism includes a weight re= ceiver 12, formed to include astem 13, which supports at its upper end a removable platter 14 abovethe plane of the housing. Below the platter 14 the ste'n'fincludes apair of spirit levels 15, disposed at right angles to each other, and itwill be seen that by removing the platter the spirit levelsmay be viewedso that the operator by adjusting the nuts 0 11 will be provided withmeans for indlcating when the base is properly positioned in its truehorizontal plane.

Mounted upon the base are'spaced bearing brackets 16 upon which ispivotally mounted,

through the medium of knife edge bearings 17 one end of a yoke shapedbeam 18, which terminates in a forwardly and longitudinally projectingcentrally situated arm 19. To the end of this arm there is pivotallyconnected go by knife edge bearings a bail 20, which has its lowerport-ion similarly connected as at 21 with the outer end of a lower beammem ber 22, the latter being also terminated to in-' clude a yoke shapedextremity 23, which is 25 pivotally mounted by knife edge bearings 24upon a bracket 25, carried by the base 1, at the opposite ends of thelatter as regards the bracket 16. By this constructionthe usual form ofa compound beam is secured. One of the beam members. is connected with adash pot 26 for controlling the pivotal movementsof the beam members andto stabilize the actuat'on thereof under applied loads.

Th stem 13 of the weight receiver termiu nates at its lower end in aplurality of downwardly radiating diverging arms 27, which are pivotallyconnected by knife edge bearings 28 with the beam members 18 and 22 inorder that the weight receiver willbe pivotally supported by the beammechanism.

Each of the beam members, as shown in Fig.

3, is connected with a flexible strap 29, and each of said straps isalso connected with an arcuate stirrup 30 provided upon the ends of 5bell crank levers 31, which are -pivotally mounted as at 32 inconnection with the base. The longer downwardly extending arms of thelevers 31 firry adjustable weights33, which may be set so that theaction of these 5 levers or pendulums will serve to counteract theweight of the stem 13 or the weight receiver bodily and to maintain thescale mechanism balanced in accordance with scales employing thependulum principle of operation. It will be understood that whenment 39is formed on opposite sides of the vertical axis of the drum to includean elongated reading lens 40 and on its opposite side to include a pairof spaced and smaller lenses 41, the lenses 40 and 41 permitting boththe customer and merchants to read the weighing positions andindications of the drum. It

will be observed, by reference to Figure 5, that the lenses 40 and 41are carried in connection with brackets 42 mounted upon the main bracket25, so that the lenses will main-- tain their fixed relative positionswith the drum throughout all positions of adjustment of the base 1. Thiscould not be accomplished with the same degree of accuracy if the lenseswere carried by the housing.

In view of the foregoing it will be seen by means of the presentinvention that I have provided a scale mechanism formed to be sus-'.pended from the scale housing and wherein provision is made forleveling the scale means y adjusting the same relative to the housing.Additional convenience is secured in the adjustment of the scale'meansby the provision of the spirit levels carried in connection with theweight receiver, whereby the operator may readily determine the level ofthe scale means from the exterior of the housing. It will be understoodthat it is not mandatory .to mount the housing. directly on a shelf orcounter, but that thecasing may be extended, as indicated at 43 inFigure 1 to support the scale beams abovethe plane of ash'elf or counterif desired. Another feature of importance resides in mounting thereading lenses so that the latter will be formed unitarily with thescale means, whereby a fixed relationship is maintained at all I timesbetween the computing drum and said lenses.

What is .claimed is: 1. In a scale, a housing, a base suspended fromsaid housing, pivotal connections between said base and saidhousing,.adjustable threaded connections between said base and saidhousing admitting of variations in the working positions of'said basewith respect to said housing, and a scale mechanism including pendulumweights carried bodily by said base and adjustable in unison therewith.V

2. In a scale, a housing, a frame depending from said housing.I aplatform pivotally con lib nected with the lower ortion of said frame,adjustable connectionsbetween said platform and said housing permittingof variations in the operating planes of said platform, a pendulumactuated beam structure carried by said platform, a weight receiverconnected with the beam structure, and a weight indicating drum carriedby said platform and actuated by said beam structure,

3 In a scale, a housing, a platform adjustably suspended from saidhousing, a beam structure carried bodily by said platform, a weightreceiver mounted on said beam structure, and level indicating meanscarried by said weight receiver.

a. in a scale, a housing, a platform pivotally suspended from saidhousing, a beam structure mounted'bodily on said platform, a weightreceiver pivotally carried by said beam structure and projectin upwardlyabove said housing, and a pair 0 spirit levels mounted in connectionwith the upper portion of said weight receiver.

5. In a scale, a housing, a platform adjustably suspended from saidhousing, a beam structure pivotally carriedby said platform, a weightindicatin means actuated by said beam structure, an a reading lenspositioned adjacent to an opening provided in said housing and saidindicating means, said lens being carried by said platform andadjustable bodily therewith.

6. In a scale, a rotatably mounted computing drum, a housin arrangedcontiguous to said drum and provided with a readin opening, and a lensarranged to occupy sai opening and adjustable about the axis of saiddrum.

7. In a scale, a base, bearing brackets arising from said base, alongitudinally extending shaft journaled in connection with saidbrackets, a computing drum rotatable about the longitudinal axis of saidshaft, a housing arranged adjacent to said drum and provided with a pairof reading openings, a frame adjustable about the axis of said shaft,and reading norms carried by said frame and positioned contiguous tosaid drum and the openings in said housin 8. In a scale, the com inationof a counter support having an opening formed therein, a

scale housing formed with a flange arranged to rest upon the marginaledges of said opening, a frame depending from said housing, a platformpivoted to the lower portion of said frame, a pendulum actuated Wei hingmechanism carried by said platform, t readed connections between saidplatform and said housing permitting of adjustment of said platform in asubstantially vertical plane, said threaded connections being accessibleabove said housing, and level indicating means carried by said weighingmechanism.

In testimony whereof I afiix my si ature.

NATHAN A. HALLW OD.

